Problems Logon on Ras Server

Hi

i have a win 2k SP4 server with ras configured as vpn server.
This server is connected via DSL to the internet and has
a private address associated with nat on a public ip address.
The nat is done on the router.

This server correctly responds to ping from outside the lan.

On my firewall ,I have open ports for PPTP and GRE.

The user id I use to try logon is enabled for dial in connection.

When i try to connect a client using a Dial up or another dsl line
i get an error (721) after trying authentication.

Is there something else that i must check for ?

Thank you
Roberto

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roberto.fabbri@xxxxxxxxxxxxxx


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